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Feb. 10, 1925.

O. E. BENDER ET AL SLUICING FLUME Filed April 14, 1924 2 sheets-sheet 1 WW ms.

BY if ATTORNEY '0. E. BEN-DER ETAL Feb. 10, 1925.

SLUIGING FLUME Filed April 14, 1924 2 Sheets-Sheet 2 INVENTORS BY 7: I: W

ATTORNEY Patented Feb. 10, 1925.

UNITED STATES PATENT OFFICE.

OTTO E. BENDER, OF SPO'KANE, WASHINGTON, AND HOWARD H. SUTI-IERVLAND, or LEONIA, IDAHO,

SLUICING FLUME.

Application filed April 14, 1924. Serial No. 706,249.

To all whom it may concern:

Be it known that we, OTTO E. Bnxnnn, a citizen of the United States of America, residing at Spokane, Spokane County, State of Washington, and Howann H. SUTI-IER- LAXD, a subject of the Kingdom of Great Britain, residing at Leonia, Boundary County, State of Idaho, have invented new and useful Improvements in Sluicing F lumes, of which the following is a specification.

This invention pertains to sluicing flumes for the recovery of precious metals and has for its object to provide a durable and convenient construction in the combination and interlocking relations of grizzlies and riiile bars.

The invention will be hereinafter particularly described, pointed out in the claims and illustrated in the accompanying drawings, in which Figure 1 is a broken-away plan view, showing the interlocking relations of 1 the grizzlies and riflie bars.

Figure 2 is a broken-away elevation of a riiile bar, showing in dotted lines, the relation of the grizzlies thereto.

Figure 3 is a sectional view taken on the line 3-3 of Figure 1,

Figure 4 is a broken-away side view of a grizzly bar, showing the construction of the end thereof, adapting the same for interlocking with a riflie bar, the position oi": the riffle bar being indicated by dotted lines,

Figure 5 is an end View thereof,

Figure 6 is a broken-away plan view of a sluicing fiume with a complete installation of the grizzly and rifile bars therein,

Figure 7 is a longitudinal sectional view, taken on the line 77 of Figure 6 and Figure 8 is a transverse sectional view taken on the line 88 of Figure 6.

In a detail description in which like numerals refer to like parts throughout the several views, aside from the grizzlies and riflies, the flume may be said. to be of ordinary construction, having a flat bottom 10, vertical sides 11, supported by sills 12 and braces 13, Figures 6, 7 and 8. Both the grizzlies 1.4 and the rifiies 15 are composed of T-shaped rails. made of metal, the invention being in the plan of placing and spacing the grizzlies and rifiles and interlocking the same, with the grizzlies arranged longitudinally with the fiume and the rifiles transversely therewith.

In the formation of the grizzlies, the rails are placed upright and arranged longitudinally in the flunie, and in the formation of the riitles 15, the same are laid on their sides, in pairs, with the wide portions backed up against each other and arranged transversely across the flume. The grizzlies 14 are cut into short sections in order to permit at their ready removal and re-placement as well, as providing for the proper spacing of the riiiles 15, which are positioned at the ends of the grizzly sections and where the grizzly sections are joined together. The interlocking of the grizzlies 14 and the riiHes 15 is provided for by forming the ends of the grizzlies 14 with inwardly beveled walls 14 and 14 and a groove 14 at the center, Figure 4, and forming grooves 15' in the little portions 15 Figure 2, such grooves being spaced from each other as desired. The grizzlies 14 and riftles 15 are then joined together as shown in Figure 3, the beveled walls 15 of the riifies 15 fitting against the beveled walls 14 and 14 of the grizzlies 14 and the necks 15 of the riitles 15 engaging the grooves 14 in the ends of the grizzlies 14. hen the grizzlies 14 and riiiles 15 are formed in the flume, they are as shown in Figures 6, 7 and 8, with the riffles 15 resting on transversely arranged supports 16 and the ends thereof supported from above by lining blocks 17.

The grizzlies 14 are spaced apart as shown in Figure 6, leaving openings 18, through which the heavier or valuable mineral. portions pass and which are caught between the riliies 15 in the space 19, Figure 7, the lighter particles and boulders being carried longitudinally along the grizzlies 14 to the end of the flumc The grizzlies 14 may be spaced so as to provide openings 18 of whatever width is desired. By removing the lining blocks 17, the sections of grizzlies 14 may be removed and the valuable minerals in the space recovered.

What is claimed is:

1. A sluicing flume comprising a flat bottom and substantially vertical side Walls, T rails arranged in pairs on their sides and joined back to back and transversely across the flume, such pairs being in spaced rela tion to each other, and T rails arranged in sections longitudinally along the flame, spaced apart and joined at their ends with the sides of the transversely arnrnged T rails, thereby forming a flin'ne floor cornposed of T rails.

2. A sluicing fluine comprising a flat bottom and substantially vertical side Walls, T rails in pairs joined back to back and arranged transversely across the tlume, the pairs being in spaced relation to each other, the front portions of such rails being grooved in spaced relation and T rails arranged longitudinally along the flmne,

spaced apart and provided with end walls imvardly inclined towards the end centers and grooves at the end centers, such ends being interlocked With the transversely arranged T rails at the grooved portions thereof.

In testimony whereof, We affix our signatures.

HOTVA RD H. SUTHERLAND. OTTO wbl. BENDER. 

